Italy-based oil company Eni is planning to shut two processing units at its Taranto refinery for maintenance in September 2011.

The shutdown of a residue hydro-conversion and a hydrocracker unit is expected to last approximately 35 to 40 days, Bloomberg reported.

The facility has a capacity to process about 110,000 barrels of oil a day and it mainly produces fuels for automotive use and residential heating purposes.

The refinery processes most of the oil produced in Eni’s Val d’Agri fields carried to Taranto through the Monte Alpi pipeline.

Earlier this month, Eni idled a thermal cracking plant, visbreaker and hydro-desulfurization unit for planned maintenance.